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IOP Elevation Study
Effects of Elevated Intraocular Pressure on the Lamina Cribrosa
Who can join
Ages 18 to 90 · All sexes · Healthy volunteers welcome
Full eligibility criteria
Inclusion Criteria: Healthy volunteers * No family history (first degree relative) of glaucoma. * No history of IOP \>22 mmHg. * Normal appearing optic discs and RNFL on dilated fundus examination. * Normal Swedish interactive thresholding algorithm (SITA) standard perimetry tests as defined by glaucoma hemifield test (GHT) within normal limits. Glaucoma suspects * Normal visual field as defined above. * Either IOP between 25 to 30 mmHg with central corneal thickness \< 550µm, or a difference ≥ 0.2 in cup to disc ratio between eyes. Glaucoma * Glaucomatous ONH abnormality: rim thinning, notching, undermining (excavation) or diffuse or localized RNFL defects that are characteristic of glaucoma. * Two consecutive abnormal SITA standard perimetry tests with GHT outside normal limits. Exclusion Criteria: * Media opacity (e.g. lens, vitreous, cornea). * Strabismus, nystagmus or a condition that would prevent fixation. * Diabetes with evidence of retinopathy. * Previous intraocular surgery or ocular trauma (with the exception of laser procedures and subjects that have undergone uneventful cataract surgery more than 6 months from enrollment date). * Neurological and non-glaucomatous causes for visual field damage. * Any intraocular non-glaucomatous ocular disorders.
About the study
The purpose of this study is to improve understanding of the pathophysiologic process that leads to the development of glaucamotous damage. The mechanism by which vision loss in glaucoma occurs is still unknown, but it is clear that increased intraocular pressure (IOP) is a major risk factor. It is also thought that the LC is a site of primary damage during pathogenesis of the disease. This prospective study with determine the in-vivo mechanical response to IOP modulation at the level of the ONH and LC.
What is being tested
- Increasing of intraocular pressure (IC) (diagnostic test)
Sponsor: NYU Langone Health · Participants: 150 · Started: Mar 7, 2018
Contact the study team
- Jamika Singleton-Garvin · Phone: +1 929 455 5539
Official record on ClinicalTrials.gov — NCT03400137
Locations in the U.S.
| New York | NYU Langone Health, New York |
From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.